Abstract

Simulations are performed to assess the potential of sparsely distributed volumetric marker tracking for estimation of local internal deformations. Assuming rigid spherical markers embedded in a compliant matrix, algorithms are developed to accurately locate the centroid of individual markers in both undeformed and deformed positions. To assess variability in the measured marker positions, Monte-Carlo simulations using Gaussian noise in the image data are analyzed. Results for a 2 % Gaussian noise indicate that variability in the marker tracking measurements is a strong function of marker radius and a weak function of sub-voxel marker position.

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